Plain-language explanation.
Biomedical engineering applies engineering principles and design concepts to medicine and biology. Biomedical engineers develop the technologies that save and improve lives — MRI scanners, pacemakers, prosthetic limbs, dialysis machines, DNA sequencing platforms, and drug delivery systems.
Core concepts and standard treatment.
Core biomedical engineering covers biomechanics (mechanical behaviour of biological materials — viscoelasticity; bone mechanics — trabecular vs cortical bone — Wolff's law; cartilage mechanics — biphasic model; cardiovascular mechanics — Windkessel model — arterial compliance; gait analysis — ground reaction forces — force plates; joint replacement — tribology — UHMWPE acetabular cup), bioinstrumentation and biosensors (electrode-electrolyte interface — half-cell potential — Ag/AgCl electrodes; ECG — 12-lead; EEG; EMG; biosensor types — enzymatic — glucose oxidase — glucometer; affinity — immunosensor — ELISA; piezoelectric — quartz crystal microbalance; microfluidic lab-on-a-chip — PDMS — soft lithography), biomaterials (metals — titanium alloys — Ti-6Al-4V; stainless steel 316L; cobalt-chrome; polymers — PEEK; UHMWPE; hydrogels — PEG; ceramics — hydroxyapatite — HA; bioresorbable materials — PLA, PLGA; biocompatibility testing — ISO 10993; osseointegration), and medical imaging (X-ray — Hounsfield units — CT — filtered back projection — beam hardening; MRI — Larmor frequency — spin-echo — T1/T2 relaxation; ultrasound — A-scan, B-scan — piezoelectric transducer; nuclear medicine — SPECT, PET — FDG-PET — tracer kinetics).
Deeper theory, debates and edge cases.
Advanced biomedical engineering covers tissue engineering and regenerative medicine (scaffolds — electrospun nanofibers — PCL, PLGA; 3D bioprinting — inkjet, extrusion, laser-assisted — bioinks — alginate, GelMA; decellularised extracellular matrix — ECM; organoids — iPSC-derived — intestinal, liver, brain; bioreactors — hollow fibre, spinner flask; cell therapy — CAR-T manufacturing — GMP — Good Manufacturing Practice), neural engineering and neuroprosthetics (neural signal recording — Utah array — Michigan probe — Neuropixels — spike sorting; brain-computer interfaces — BCI — P300 speller, motor imagery EEG — Graz BCI; ECoG — electrocorticography; DBS — deep brain stimulation — Parkinson's — closed-loop DBS; cochlear implants — speech processors), and regulatory affairs and clinical translation (FDA 510(k) — predicate device; PMA — premarket approval; EU MDR 2017/745 — technical file — CE marking; risk management — ISO 14971; clinical investigation — ISO 14155; MHRA — UK MDR; quality management — ISO 13485).
How it is applied in practice.
At the biomedical engineer and chief technology officer level, practitioners hold BEng/MEng/PhD and contribute to Biomaterials, Annals of Biomedical Engineering, and IEEE TBME; lead medical device development at MedTech companies (Medtronic, Abbott, Smith+Nephew, Lumenis, Intuitive Surgical — Da Vinci robotic surgery; Cochlear implants — Cochlear Ltd; glucose monitoring — Dexcom, Abbott FreeStyle Libre — continuous glucose monitoring); run biomedical R&D in academia (Wellcome Sanger Institute — genomics engineering; King's College London — cardiac bioengineering — tissue chips — heart-on-a-chip; MIT Koch Institute — cancer engineering); advise MHRA and BSI on medical device standards; and contribute to NHS procurement and value-based health technology assessment (NICE DAP — Diagnostics Assessment Programme; NHSE CQUIN — Commissioning for Quality and Innovation — digital health technologies — DTAC — Digital Technology Assessment Criteria).